Analysis of malaria epidemic trend changes before and after malaria elimination in Qingjiangpu District, Huai′an City
10.3969/j.issn.1005-0507.2026.01.001
- VernacularTitle:淮安市清江浦区消除疟疾前后疟疾疫情变化趋势分析
- Author:
Fu-ping WAN
1
;
Cong-ying JIA
2
Author Information
1. Huai′an Qingjiangpu District Center for Disease Control and Prevention, Huai′an 223001, Jiangsu, China
2. Huai′an Center for Disease Control and Prevention, Huai′an 223001, China
- Publication Type:Journal Article
- Keywords:
Malaria;
Pre-elimination;
Post-elimination;
Epidemic trend
- From:
Acta Parasitologica et Medica Entomologica Sinica
2026;33(1):1-8
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare and analyze malaria epidemic trends and characteristics of initial confirmed cases before and after malaria eliminating in Qingjiangpu District, Huai′an City, and to provide a scientific basis for improving strategies to prevent imported malaria retransmission. Methods Malaria case data from Qingjiangpu District were obtained from the National Infectious Disease Information Reporting System for 2010-2023. Case investigation and epidemiological data were summarized and analyzed for the pre-elimination period (2010-2016)and post-elimination period(2017-2023). Results A total of 185 malaria cases were reported between 2010 and 2023, with one locally acquired case in both 2010 and 2011; the remainder were imported, primarily falciparum malaria. Post-elimination cases decreased from 140 to 45, showing a statistically significant difference in case distribution ratios(χ2=9.642, P<0.05). Seasonal peaks occurred in early January and mid-July before elimination but showed no distinct pattern afterward. Malaria cases were mainly imported from Africa countries, and most patients were young adult males. Post-elimination, the proportion of migrant workers decreased, while technical and business personnel increased significantly(χ2=17.855, P<0.05). Both time-to-diagnosis and time-to-certification changed markedly after elimination, with township health centers showing improved diagnostic accuracy at initial visits. All confirmed patients were treated at designated municipal medical institutions. Conclusions After malaria elimination in Qingjiangpu District, imported malaria remains a serious concern, with cases reported each year. Therefore, it is necessary to continue strengthening the malaria monitoring system, enhance screening and evaluation of key populations, improve health education, raise diagnostic and treatment capacity across all medical institutions, and consolidate the achievements of malaria elimination.
